ZyXEL U-336R User Guide - Page 34
Non-Volatile Memory
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You can use the Sr? command to view the value of S-register 'r'. For example, to view the value of S-register S0, which controls autoanswering, type ATS0? and press Enter. The modem responds with a three-digit character showing the value of this register, followed by OK. A value of 002, for example, means your modem will auto-answer incoming calls after the second ring. Some S-registers are bit mapped. For these registers, you can use the Sr.b? command to read their values. For example, to read the value of S-register S35, bit 7, type ATS35.7? and press Enter. The modem responds with an appropriate value, followed by OK. Changing S Register Values You can use the ATS0=n command to change the value of an Sregister. For example, to have your modem auto-answer an incoming call after two rings, set S-register 0 to 2. Be sure the n value is between 1 and 255. If n is set to 0, your modem will not answer incoming calls. Non-Volatile Memory The U-336S/SA has an amount of memory set aside for storing user information such as frequently used phone numbers and default command settings. The latter is particularly useful when using your modem to call a variety of different locations that require different settings. For this reason, your modem provides a number of user "Profiles" that can be accessed through simple AT commands. This section covers the topics of storing phone numbers, and saving default settings in the power-on profile. 20 Basic Modem Operation